Features: Compatibility: This temperature sensor is a replacement part for spa temperature sensors, compatible with various hot tub models. It is designed to help maintain the desired water temperature in your spa system. Compatible Models: - J-270, J-280, J-355, J-365, J-375 (2007 and newer) - J-210, J-220, J-230 (2005 and newer), J-200 LED models - J-325 (2005–2007), J-335, J-345 (2004 and newer) - Del Sol models (2003–2005) - J-320, J-330, J-340 (2002–2003) - J-300 Series (2002 and newer), J-350, J-360, J-380 (2002–2003) - J-355, J-365, J-375, J-385 (2004–2006) - All J-400 models (2006–2009) Also compatible with: - 880 Systems (2005 and newer) - 850 Systems (1997–2005 and 1997 and newer) - 400, 600, 600-S, 750, 800, and 850 Systems - Suncoast (1992) - Suntub SVDV Systems (496–498) Replaces: #6600-138, 6600-105 Interchangeable with: 6600-182 sensor (stainless steel) with box end connectors For inground spas without a skirt, refer to model 6600-169 Function: Helps resolve common error codes such as OH or ICE on spa control panels by accurately monitoring water temperature. Installation: Easy wire-to-wire connection. Simply disconnect the old sensor, connect the new sensor's wiring to the existing harness, and route it back to the control board. Specifications: - Part Name: Temperature Sensor - Part Number: 6600-166 - Material: Non-woven fabric - Color: Black Package Contents: 1 x Temperature Sensor Note: The package includes only the item listed. Other accessories are not included. Due to lighting and display differences, the actual color may vary slightly from the image. Size measurements may have a tolerance of ±1–3 cm.